Journal
SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY
Volume 43, Issue 10, Pages 1429-1433Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15533174.2012.757751
Keywords
copper complexes; crystal structures; hydrogen bond; mononuclear complexes; self-assembly
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The self-assembly of one equivalent each of copper bromide and ammonium thiocyanate with O,N-donor Schiff base ligands 2-bromo-6-[(2-dimethylaminoethylimino)methyl]phenol (L-1) and 2-bromo-6-[(2-ethylaminoethylimino)methyl]phenol (L-2) in methanol under aerobic conditions provide two mononuclear copper(II) complexes [CuL1(NCS))] (1) and [Cu(L-2)(2)].2Br (2). The complexes have been characterized by analytical and spectroscopic measurements. The crystal structures of the complexes have been determined by X-ray crystallography. In both complexes, the metal centers are in square planar coordination geometries. The L-1 ligand coordinates the metal ion through the three N,N,O donor atoms, while the L-2 ligand coordinates the metal ion merely through the imine-N and the phenolate-O atoms. Slight change in the terminal groups of the Schiff base ligands as well as the formation of hydrogen bonds can lead to totally different structures during the self-assembly processes.
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